CN109830333A - A kind of detection cable - Google Patents
A kind of detection cable Download PDFInfo
- Publication number
- CN109830333A CN109830333A CN201910220939.1A CN201910220939A CN109830333A CN 109830333 A CN109830333 A CN 109830333A CN 201910220939 A CN201910220939 A CN 201910220939A CN 109830333 A CN109830333 A CN 109830333A
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- Prior art keywords
- layer
- fixedly connected
- cable
- fire extinguishing
- enhancement layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 45
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 8
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000003351 stiffener Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011491 glass wool Substances 0.000 claims description 4
- 235000017899 Spathodea campanulata Nutrition 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of detection cables, more particularly to field of cables, including conductor cores, the surface of the conductor cores is fixedly connected with conductor shield, the surface of the conductor shield has been movably connected with limited block and locating piece, and the surface of the locating piece is fixedly connected with fixing layer.The present invention by limited block and locating piece allow to by the positions of conductor cores be fixed, preventing the conductor cores inside cable from mutually rotating causes to fracture, influence the electric property of cable, the expansion of heat expanding block heat squeezes fire extinguishing ball and fire extinguishing ball is made to be in compressive state, and when fire occurs for the cable and fire extinguishing ball is burnt out, it puts out a fire so that the fire extinguishing ball of compressive state can spray carbon dioxide, to play purpose resistant to high temperature, it can externally be protected armor steel wire by the first enhancement layer and the second enhancement layer, prevent steel wire wear serious, to increase the service life of the cable.
Description
Technical field
The present invention relates to field of cable technology, it is more particularly related to a kind of detection cable.
Background technique
Charge bearing detecting cable refers mainly in the case of capable of bearing mechanical load (sash weight is powered on cable self weight), carries out the spy of underground oil field
The double wire armor cable of survey, also known as petroleum well logging cable, function have well logging, perforation, coring etc..Logging cable is in petroleum work
It is referred to as " eyes of oil worker " in industry, just can know that underground is oil or gas by it, and well temperature, well pressure and well can be measured
Tiltedly wait technical parameters.
But charge bearing detecting cable in the prior art, still there is more disadvantage, since cable need to be in very severe height
It works under temperature, hyperbar and corrosive environment, the steel wire armor layer of charge bearing detecting cable is easily damaged, in addition, electricity after being used for multiple times
The steel wire wear of cable outer layer is serious, these situations cause charge bearing detecting cable service life shorter.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of detection cable, passes through limited block
With locating piece allow to by the positions of conductor cores be fixed, preventing the conductor cores inside cable from mutually rotating causes to roll over
It is disconnected, the electric property of cable is influenced, the expansion of heat expanding block heat squeezes fire extinguishing ball and fire extinguishing ball is made to be in compressive state, and
When fire occurs for the cable and fire extinguishing ball is burnt out, is gone out so that the fire extinguishing ball of compressive state can spray carbon dioxide
Fire can be protected externally armor steel wire to play purpose resistant to high temperature by the first enhancement layer and the second enhancement layer,
Prevent steel wire wear serious, to increase the service life of the cable.
To achieve the above object, the invention provides the following technical scheme: a kind of detection cable, including conductor cores, it is described to lead
The surface of body core is fixedly connected with conductor shield, and the surface of the conductor shield has been movably connected with limited block and positioning
Block, the surface of the locating piece are fixedly connected with fixing layer, and the surface of the fixing layer is fixedly connected with high-temperature-resistant layer, described resistance to
The surface of heat zone is fixedly connected with anti abrasion layer；
The high-temperature-resistant layer includes insulation screen, and insulation screen is fixedly connected on the surface of fixing layer, the insulation screen
The surface for covering layer is fixedly connected with inner armor layer, and the surface of the inner armor layer has been respectively fixedly connected with stiffener and heat expansion
Block, the other end of the stiffener are fixedly connected with corrosion-resistant coating, and the surface activity of the heat expanding block is connected with fire extinguishing ball,
The surface of the corrosion-resistant coating is fixedly connected with flexible strip, and the other end of the flexible strip is fixedly connected with outer metal screen layer；
The anti abrasion layer includes the first enhancement layer, and the first enhancement layer is fixedly connected on the surface of outer metal screen layer, described
The surface of first enhancement layer is fixedly connected with armoured layer, and the surface of the armoured layer is fixedly connected with the second enhancement layer, institute
The surface for stating the second enhancement layer is fixedly connected with oversheath.
In a preferred embodiment, the surface of the limited block and the corresponding conductor shield of locating piece opens up
It is fluted, and the circular arc degree of the groove of limited block and locating piece is adapted with the circular arc degree of conductor shield.
In a preferred embodiment, the fire extinguishing ball is ball, and fire extinguishing ball is internally provided with titanium dioxide
Carbon, in the cavity that the fire extinguishing ball is formed between inner armor layer, stiffener and corrosion-resistant coating.
In a preferred embodiment, the cavity in the fixing layer, inner armor layer, stiffener and corrosion-resistant coating it
Between in the cavity that is formed between the cavity formed and corrosion-resistant coating, flexible strip and outer metal screen layer filled with high temp glass
Cotton.
In a preferred embodiment, the armoured layer is formed by braided steel wire, and the braiding of armoured layer is close
Degree is greater than 80 percent.
In a preferred embodiment, the inner wall of the surface of first enhancement layer and the second enhancement layer with outer armour
Setting is adjoined on the surface of dress layer, and the first enhancement layer and the second enhancement layer are carbon fiber wire layer.
Technical effect and advantage of the invention:
1, the present invention squeezes fire extinguishing ball by the expansion of heat expanding block heat and fire extinguishing ball is made to be in compressive state, and works as the electricity
When fire occurs for cable and fire extinguishing ball is burnt out, is put out a fire so that the fire extinguishing ball of compressive state can spray carbon dioxide, thus
Play purpose resistant to high temperature；
2, make conductor cores have simple anti-tampering ability by being wrapped in the conductor shield of conductor wicking surface, pass through limit
Block and locating piece allow to by the positions of conductor cores be fixed, preventing the conductor cores inside cable from mutually rotating causes to roll over
It is disconnected, influence the electric property of cable；
3, it can externally be protected armor steel wire by the first enhancement layer and the second enhancement layer, prevent steel wire wear serious,
To increase the service life of the cable.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is conductor cores structural schematic diagram of the invention.
Fig. 3 is high-temperature-resistant layer structural schematic diagram of the invention.
Fig. 4 is anti abrasion layer structural schematic diagram of the invention.
Fig. 5 is overall structure diagram of the invention.
Fig. 6 is standoff features schematic diagram of the invention.
Appended drawing reference are as follows: 1 conductor cores, 2 conductor shields, 3 limited blocks, 4 locating pieces, 5 fixing layers, 6 high-temperature-resistant layers, 601
Insulation screen, 602 inner armor layers, 603 stiffeners, 604 heat expanding blocks, 605 corrosion-resistant coatings, 606 fire extinguishing balls, 607 flexibilities
Item, 608 outer metal screen layers, 7 anti abrasion layers, 701 first enhancement layers, 702 armoured layers, 703 second enhancement layers, 704 are protected outside
Set.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of detection cable according to shown in Fig. 1,2 and 5, including conductor cores 1, the surface of the conductor cores 1 are fixedly connected
There is conductor shield 2, the surface of the conductor shield 2 has been movably connected with limited block 3 and locating piece 4, the limited block 3
Fluted, and the circular arc degree of the groove of limited block 3 and locating piece 4 is opened up with the surface of the corresponding conductor shield 2 of locating piece 4
It is adapted with the circular arc degree of conductor shield 2, so that the cable is when in use, prevents the conductor cores 1 inside cable from mutually turning
It is dynamic to cause to fracture, the electric property of cable is influenced, the surface of the locating piece 4 is fixedly connected with fixing layer 5, the fixing layer 5
Surface be fixedly connected with high-temperature-resistant layer 6, the surface of the high-temperature-resistant layer 6 is fixedly connected with anti abrasion layer 7.
Embodiment specifically: when in use, the conductor shield 2 by being wrapped in 1 surface of conductor cores makes the cable
Conductor cores 1 have simple anti-tampering ability, by limited block 3 and locating piece 4 allow to by the positions of conductor cores 1 carry out
It is fixed, it prevents the mutually rotation of the conductor cores 1 inside cable from causing to fracture, influences the electric property of cable, and the sky in fixing layer 5
The high temperature glass wool of chamber filling plays the role of high temperature resistant in the cable.
A kind of detection cable according to shown in Fig. 1,3 and 5, the high-temperature-resistant layer 6 includes insulation screen 601, and is insulated
Shielded layer 601 is fixedly connected on the surface of fixing layer 5, and the surface of the insulation screen 601 is fixedly connected with inner armor layer
602, the surface of the inner armor layer 602 has been respectively fixedly connected with stiffener 603 and heat expanding block 604, the stiffener 603
The other end be fixedly connected with corrosion-resistant coating 605, the surface activity of the heat expanding block 604 is connected with fire extinguishing ball 606, described
Fire extinguishing ball 606 is ball, and fire extinguishing ball is internally provided with carbon dioxide, the fire extinguishing ball 606 be located at inner armor layer 602,
In the cavity formed between stiffener 603 and corrosion-resistant coating 605, so that when the cable is in hot environment, so that heat is swollen
The expansion of expansion block 604 squeezes fire extinguishing ball 606 and fire extinguishing ball 606 is simultaneously made to be in compressive state, and when fire occurs for the cable and incites somebody to action
Fire extinguishing ball 606 is burnt out, so that the fire extinguishing ball 606 of compressive state can put out a fire carbon dioxide ejection, the corrosion-resistant coating 605
Surface be fixedly connected with flexible strip 607, the other end of the flexible strip 607 is fixedly connected with outer metal screen layer 608, described
Cavity, inner armor layer 602, stiffener 603 in fixing layer 5 and the cavity and corrosion-resistant coating formed between corrosion-resistant coating 605
605, high temperature glass wool is filled in the cavity formed between flexible strip 607 and outer metal screen layer 608, high temperature glass wool is protected
Lightweight that adiabator is made of uniform elongate, flexible glass fibre and special high-temperature adhesives, durable, thermal insulation property
Superior high-temperature-resistant thermal-insulation heat-barrier material is filled in the holding roundness for playing the role of high temperature resistant in the cable and making cable；
Embodiment specifically: by insulation screen 601 and outer metal screen layer 608 further strengthen conductor cores 1 have it is anti-
Interference performance protects conductor cores 1 inside cable by inner armor layer 602, and inner armor layer 602 is compiled by silver-gilt copper wire
It knits, when the cable is in hot environment, so that the expansion of heat expanding block 604 squeezes fire extinguishing ball 606 and makes at fire extinguishing ball 606
In compressive state, and when fire occurs for the cable and fire extinguishing ball 606 is burnt out, so that the fire extinguishing ball 606 of compressive state can incite somebody to action
Carbon dioxide ejection is put out a fire, to play purpose resistant to high temperature, allows to reinforce appointing for the cable by flexible strip 607
Property, it prevents from disconnecting inside cable.
A kind of detection cable according to shown in Fig. 1,4,5 and 6, the anti abrasion layer 7 include the first enhancement layer 701, and the
One enhancement layer 701 is fixedly connected on the surface of outer metal screen layer 608, and the surface of first enhancement layer 701 is fixedly connected with
Armoured layer 702, the armoured layer 702 are formed by braided steel wire, and the count of armoured layer 702 is greater than 8 percent
Ten, count is excessive and too small bad, and count is excessive, will lead to that mesh grid is stiff, and flexibility is poor, weaves close
Spend small, will lead to that intensity is lower, and load bearing effect is poor, the surface of first enhancement layer 701 and the second enhancement layer 703 it is interior
Wall adjoins setting with the surface of armoured layer 702, and the first enhancement layer 701 and the second enhancement layer 703 are carbon fiber wire layer,
The tensile strength of carbon fiber wire is 3.5 times of steel wire, and the pulling force born is big, and two layers of carbon fiber wire layer is located at armoured
The surface of layer 702 and inner wall, so that the abrasion strength resistance of the cable is higher, the surface of the armoured layer 702 is fixedly connected with
The surface of second enhancement layer 703, second enhancement layer 703 is fixedly connected with oversheath 704；
Embodiment specifically: wrapped up armoured layer 702 by the first enhancement layer 701 and the second enhancement layer 703, so that passing through
The protection of first enhancement layer 701 and the second enhancement layer 703 can be protected externally 702 steel wire of armor, and steel wire wear is prevented
Seriously, to increase the service life of the cable.
Working principle of the present invention:
Referring to Figure of description 1,2 and 5, when in use, the conductor shield 2 by being wrapped in 1 surface of conductor cores makes the cable
Conductor cores 1 have simple anti-tampering ability, by limited block 3 and locating piece 4 allow to by conductor cores 1 position into
Row is fixed, and is prevented the mutually rotation of the conductor cores 1 inside cable from causing to fracture, is influenced the electric property of cable；
Referring to Figure of description 1,3 and 5, when the cable is in hot environment, so that the expansion of heat expanding block 604 squeezes fire extinguishing
Ball 606 simultaneously makes fire extinguishing ball 606 be in compressive state, and when fire occurs for the cable and burns out fire extinguishing ball 606, so that pressure
The fire extinguishing ball 606 of contracting state can put out a fire carbon dioxide ejection, to play purpose resistant to high temperature；
It, can external armor 702 by the first enhancement layer 701 and the second enhancement layer 703 referring to Figure of description 1,4,5 and 6
Steel wire is protected, and prevents steel wire wear serious, to increase the service life of the cable.
The several points that should finally illustrate are: firstly, in the description of the present application, it should be noted that unless otherwise prescribed and
It limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, can be mechanical connection or electrical connection, be also possible to two
Connection inside element, can be directly connected, and "upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when
The absolute position for being described object changes, then relative positional relationship may change；
Secondly: the present invention discloses in embodiment attached drawing, relates only to the structure being related to the embodiment of the present disclosure, and other structures can
With reference to being commonly designed, under not conflict situations, the same embodiment of the present invention and different embodiments be can be combined with each other；
Last: the foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of detection cable, including conductor cores (1), it is characterised in that: the surface of the conductor cores (1) is fixedly connected with conductor
The surface of shielded layer (2), the conductor shield (2) has been movably connected with limited block (3) and locating piece (4), the positioning
The surface of block (4) is fixedly connected with fixing layer (5), and the surface of the fixing layer (5) is fixedly connected with high-temperature-resistant layer (6), described
The surface of high-temperature-resistant layer (6) is fixedly connected with anti abrasion layer (7)；
The high-temperature-resistant layer (6) includes insulation screen (601), and insulation screen (601) is fixedly connected on fixing layer (5)
The surface on surface, the insulation screen (601) is fixedly connected with inner armor layer (602), the surface of the inner armor layer (602)
It is respectively fixedly connected with stiffener (603) and heat expanding block (604), the other end of the stiffener (603) is fixedly connected with
The surface activity of corrosion-resistant coating (605), the heat expanding block (604) is connected with fire extinguishing ball (606), the corrosion-resistant coating
(605) surface is fixedly connected with flexible strip (607), and the other end of the flexible strip (607) is fixedly connected with outer metallic shield
Layer (608)；
The anti abrasion layer (7) includes the first enhancement layer (701), and the first enhancement layer (701) is fixedly connected in outer metallic shield
The surface of layer (608), the surface of first enhancement layer (701) are fixedly connected with armoured layer (702), the armoured layer
(702) surface is fixedly connected with the second enhancement layer (703), and the surface of second enhancement layer (703) is fixedly connected with outer shield
It covers (704).
2. a kind of detection cable according to claim 1, it is characterised in that: the limited block (3) and locating piece (4) are opposite
Answer the surface of conductor shield (2) to open up fluted, and the circular arc degree of the groove of limited block (3) and locating piece (4) with lead
The circular arc degree of body shielded layer (2) is adapted.
3. a kind of detection cable according to claim 1, it is characterised in that: the fire extinguishing ball (606) is ball, and is gone out
Fireball is internally provided with carbon dioxide, and the fire extinguishing ball (606) is located at inner armor layer (602), stiffener (603) and anticorrosion
In the cavity formed between layer (605).
4. a kind of detection cable according to claim 1, it is characterised in that: cavity, inner armor in the fixing layer (5)
The cavity and corrosion-resistant coating (605) that are formed between layer (602), stiffener (603) and corrosion-resistant coating (605), flexible strip (607) and
High temperature glass wool is filled in the cavity formed between outer metal screen layer (608).
5. a kind of detection cable according to claim 1, it is characterised in that: the armoured layer (702) is by braided steel wire
It forms, and the count of armoured layer (702) is greater than 80 percent.
6. a kind of detection cable according to claim 1, it is characterised in that: the surface of first enhancement layer (701) and
The inner wall of second enhancement layer (703) adjoins setting, and the first enhancement layer (701) and second with the surface of armoured layer (702)
Enhancement layer (703) is carbon fiber wire layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220939.1A CN109830333B (en) | 2019-03-22 | 2019-03-22 | Detection cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220939.1A CN109830333B (en) | 2019-03-22 | 2019-03-22 | Detection cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109830333A true CN109830333A (en) | 2019-05-31 |
| CN109830333B CN109830333B (en) | 2020-10-16 |
Family
ID=66871128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910220939.1A Active CN109830333B (en) | 2019-03-22 | 2019-03-22 | Detection cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109830333B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202523480U (en) * | 2012-03-20 | 2012-11-07 | 重庆泰山电缆有限公司 | High strength cable |
| CN104900330A (en) * | 2015-05-13 | 2015-09-09 | 无锡市恒汇电缆有限公司 | Halogen-free mud resistant medium voltage power cable for offshore oil platform and manufacturing method thereof |
| CN206194415U (en) * | 2016-11-30 | 2017-05-24 | 天长市徽宁电器仪表厂 | Waterproof anticorrosion computer cable |
| CN108231261A (en) * | 2016-12-14 | 2018-06-29 | 新昌县远轴工业设计有限公司 | A kind of improved electric cable structure |
| CN208607953U (en) * | 2018-07-11 | 2019-03-15 | 广东欢联电子科技有限公司 | A kind of cable with flame retarding function |
-
2019
- 2019-03-22 CN CN201910220939.1A patent/CN109830333B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202523480U (en) * | 2012-03-20 | 2012-11-07 | 重庆泰山电缆有限公司 | High strength cable |
| CN104900330A (en) * | 2015-05-13 | 2015-09-09 | 无锡市恒汇电缆有限公司 | Halogen-free mud resistant medium voltage power cable for offshore oil platform and manufacturing method thereof |
| CN206194415U (en) * | 2016-11-30 | 2017-05-24 | 天长市徽宁电器仪表厂 | Waterproof anticorrosion computer cable |
| CN108231261A (en) * | 2016-12-14 | 2018-06-29 | 新昌县远轴工业设计有限公司 | A kind of improved electric cable structure |
| CN208607953U (en) * | 2018-07-11 | 2019-03-15 | 广东欢联电子科技有限公司 | A kind of cable with flame retarding function |
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| Publication number | Publication date |
|---|---|
| CN109830333B (en) | 2020-10-16 |
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Effective date of registration: 20221104 Address after: 239312 No.99 Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee after: TIANCHANG HUILING ELECTRIC APPLIANCE METER FACTORY Address before: 239312 No.99 Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee before: ANHUI HUI NING ELECTRICAL INSTRUMENT GROUP Co.,Ltd. |
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Effective date of registration: 20240103 Address after: 239311 No.99, Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee after: ANHUI HUI NING ELECTRICAL INSTRUMENT GROUP Co.,Ltd. Address before: 239312 No.99 Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee before: TIANCHANG HUILING ELECTRIC APPLIANCE METER FACTORY |